AIO = All In One
Is simply when a flight controller and four ESCs are all combined into one circuit board making for a more compact build. They are very popular, almost essential now for 4” and smaller quads
Some makers now include RXs and VTXs
As @notveryprettyboy said yesterday it is a motor MOSFET that has disintegrated, it’s part of the ESC portion of the AIO board
Thanks for that Steve 
I think I have good grounds to go forward with this, but if all I get from Iflight is a bag of excuses then so be it…
I have been researching and come across an alternative which my be better than the Iflight board …
Just make sure it will fit your frame. iFlight have a habit of designing their frames around their own boards. Especially their cinewhoops.
Just had this back from IFlight 
Hi Nick,
Have you change anything？
And Please provide following data to quickly analyze the situation.
Describe the problem and troubleshooting you’ve been done already:
Order number:
Ordered from:
(if not ordered from our shop, please add a Screenshot of your order confirmation)
Date of purchase:
Date of arrival:
Product name:
SKU number (on the part box):
DVR (if in-flight problem):
Blackbox log: Where do you find this ??
Video (that describes and explains your problem):
Pictures (of the faulty part and drone condition):
Best wishes
Scarlet
Customer Support Team
Talk about jumping through hoops !!
Standard lol
Well iv sent back what I can but there asking for the blackbox log
What they think Im flying 747s, wouldnt even know how to get that info, bloody blackbox I ask you 
That board appears to have a 16MB black box built in. You can access it through betaflight configurator…
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